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Nanostructured TiO 2 Films with 2 eV Optical Gap
Author(s) -
Barborini E.,
Conti A. M.,
Kholmanov I.,
Piseri P.,
Podestà A.,
Milani P.,
Cepek C.,
Sakho O.,
Macovez R.,
Sancrotti M.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200401169
Subject(s) - materials science , band gap , optoelectronics , cluster (spacecraft) , carbothermic reaction , range (aeronautics) , deposition (geology) , thin film , porosity , carbon fibers , nanotechnology , molecule , composite material , paleontology , carbide , chemistry , organic chemistry , sediment , composite number , computer science , biology , programming language
Nanostructured TiO 2 (ns‐TiO 2 ) films obtained by supersonic cluster beam deposition possess highly porous, defective structures, and allow efficient incorporation of carbon‐ containing molecules during thermal treatment. Carbothermal reduction modifies the electronic structure of the ns‐TiO 2 , narrowing the optical gap to 2 eV. This is within the range of visible solar radiation (see Figure), allowing more efficient photoconversion.